Solve.The Epson Stylus 850 can print Helen's class project in 24 minutes. The Epson Stylus 500 can print the project in 30 minutes. If the two printers work together, how long would they take to print out the project?
A. 9 min
B. 13
min
C. 
min
D. 120 min
Answer: B
Mathematics
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Find the derivative of y.y = csch 
A. -csch 
coth 
B. csch 
coth 
C. 
csch 
coth 
D. - 
csch 
coth 
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Use the given information to find the exact value of the trigonometric expression.sin ? = - 
; 
< ? < 2?
Find cos(2?).
A. 
B. - 
C. 
D. - 
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Factor the expression completely, if possible.25y2 - 82y + 64
A. (5y + 8)2 B. (5y - 8)2 C. (5y - 8)(5y + 8) D. Does not factor
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Solve the differential equation.
8y" + y' = 0
Mathematics